State police in Gettysburg announced Monday they had arrested 23-year-old Samantha Unger, of Thurmont, after she told them she put drops of Visine into drinks for her 3-year-old and that her 1-year-old got sick by drinking them accidentally. She faces charges of aggravated assault and endangering the welfare of children.

A police affidavit says both children became sick this spring, and the older boy required hospitalization. Doctors at Hershey Medical Center suspected poisoning, and tests found the drug in the 3-year-old's urine.

Unger lived in Orrtanna at the time, outside Gettysburg, before moving across the Maryland border to Thurmont.

Unger's public defender didn't return a phone message. A judge set bail at $50,000 about two weeks ago